3 files changed, 59 insertions, 0 deletions
diff --git a/.deadcode-out b/.deadcode-out
index ae0d358b51..64741ec7ac 100644
--- a/.deadcode-out
+++ b/.deadcode-out
@@ -169,6 +169,9 @@ code.gitea.io/gitea/modules/json
 	StdJSON.NewDecoder
 	StdJSON.Indent
 
+code.gitea.io/gitea/modules/log
+	NewEventWriterBuffer
+
 code.gitea.io/gitea/modules/markup
 	GetRendererByType
 	RenderString
diff --git a/modules/log/event_writer_buffer.go b/modules/log/event_writer_buffer.go
new file mode 100644
index 0000000000..28857c2189
--- /dev/null
+++ b/modules/log/event_writer_buffer.go
@@ -0,0 +1,22 @@
+// Copyright 2025 The Forgejo Authors.
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package log
+
+import (
+	"bytes"
+)
+
+type EventWriterBuffer struct {
+	*EventWriterBaseImpl
+	Buffer *bytes.Buffer
+}
+
+var _ EventWriter = (*EventWriterBuffer)(nil)
+
+func NewEventWriterBuffer(name string, mode WriterMode) *EventWriterBuffer {
+	w := &EventWriterBuffer{EventWriterBaseImpl: NewEventWriterBase(name, "buffer", mode)}
+	w.Buffer = new(bytes.Buffer)
+	w.OutputWriteCloser = nopCloser{w.Buffer}
+	return w
+}
diff --git a/modules/log/event_writer_buffer_test.go b/modules/log/event_writer_buffer_test.go
new file mode 100644
index 0000000000..5c0343b8a8
--- /dev/null
+++ b/modules/log/event_writer_buffer_test.go
@@ -0,0 +1,34 @@
+// Copyright 2025 The Forgejo Authors.
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package log_test
+
+import (
+	"context"
+	"testing"
+
+	"code.gitea.io/gitea/modules/log"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBufferLogger(t *testing.T) {
+	prefix := "TestPrefix "
+	level := log.INFO
+	expected := "something"
+
+	bufferWriter := log.NewEventWriterBuffer("test-buffer", log.WriterMode{
+		Level:      level,
+		Prefix:     prefix,
+		Expression: expected,
+	})
+
+	logger := log.NewLoggerWithWriters(context.Background(), "test", bufferWriter)
+
+	logger.SendLogEvent(&log.Event{
+		Level:         log.INFO,
+		MsgSimpleText: expected,
+	})
+	logger.Close()
+	assert.Contains(t, bufferWriter.Buffer.String(), expected)
+}